Gas-washer.



No. 784,556. PATENTED MAR. 14, 1905. H. GERDES.

GAS WASHER.

APPLIGATION FILED MAY 18, 1903.

3 SHEETS-SHEET 1.

No. 784,556. PATENTED MAR. 14, 1905. H. GERDES.

GAS WASHER.

APPLICATION FILED MAY 18, 1903.

3 SHEETS-SHEET 2.

lama/MM, {gay/ 2 0y:- K.L/MMN\MUL 4 VM No. 784,556. PATENTED MAR. 14,1905. H. GERDES.

GAS WASHER.

APPLICATION FILED my 1a, 1903.

3 SHEETSSHEET 3.

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UNITED STATES Patented March 14, 1905.

PATENT OFFICE.

HEINRICH GERDES, OF BERLIN, GERMANY, ASSIGNOR TO THE FIRM OF JULIUSPINTSCH, OF BERLIN, GERMANY.

GAS-WASHER.

SPECIFICATION forming part of Letters Patent No. 784,556, dated March14, 1905.

Application filed May 18,1903. Serial No. 157,638.

To (all 1071 0711 it Duty concern:

Be it known that I, HEINRICH GERDES, a subject of the German Emperor,residing at Berlin, Germany, have invented a certain new and usefulImproved Gas-\Vasher, of which the following is a description.

lhe present invention consists of a gaswasher for cleansing the gas ofammonia, naphthalene, cyanogen, sulfureted hydrogen, and otherimpurities, the object being to obtain the substances washed out in asconcentrated a state as possible. In connection with this class ofwasher it is essential that the gas which has been almost purified bebrought into contact with washing fluid which is practically fresh 1'.(2., which is not already saturated with impurities so that the lasttrace of any impurity will be effectively removed. This result isattained advantageously in the present case by applying the principle ofopposing currents, as illustrated in the accompanying drawings, in whichsimilar letters of reference denote similar parts throughout the severalviews.

Figure 1 is a part vertical section taken along the line A B of Fig. 2,which is a section on line C D of Fig. 1. Fig. 3 is a partsectionalelevation showing a modified form of the device.

The washer a is built up of the sections :12, advantageously boltedtogether by means of their upper and lower flanges. Each section isprovided with a bottom plate p, sloping downwardly toward the center andprovided with a central orifice 0, having an upwardlyturned flange a.The orifices of all the sections are substantially on the same verticalplane, and a shaft Q0, having a driving-pulley c at the upper end,extends throughout the center of the apparatus, the said shaftbeingrotated by any suitable means. On this are mounted, one above eachorifice 0, a series of fan or stirrer wheels, each of which consists ofan upwardly-flared conical ring I), suitably attached to its boss on bymeans of arms a, the lower edge of the said ring being adapted toencircle the flange of the orifice 0, leaving an intermediate spacebetween the parts, as

will be clearly seen from Fig. 1. Each wheel is provided with anysuitable number of tangentially-arranged jets (Z,(in the drawings fourare shown,) opening into the interior of the sections :0. Each sectionis provided with a partition-plate 2', which slopes downwardly from thecenter toward the edges and forms a cover for the sections,havingorifices .2 around the edges, and each section also has a handholeit for cleaning purposes. The inlet for the purifying liquid is at theupper part of the receptacle, as indicated at 0, while the gasinlet isformed on the lowermost section at R.

The device operates in the following manner: The purifying liquid isintroduced at e and flows onto the bottom plate of the topmost sectionuntil it overflows the flange a and passes down onto the cover-plate ofthe next section below it, running along to the edge of the same andpassing through the openings 2 into the next section, and so on untilall the sections have been filled to the height of the flange a. Theshaft w is rotated in the direction of the arrows in Fig. 1 and causesthe fan-wheels to hold the liquid in each section in continuousagitation, throwing it outwardly in the form of fine particles oratomized. The gas enters at R and passes up through the lowermostorifice 0 and out through the jets (Z, which being in rotation willthrow it outwardly and cause it to be thoroughly and intimately mixedwith the atomized purifying liquid in the section. The gas then passesupwardly through the openings z'to the next section above, and so onuntil it reaches the outlet-pipe R in a thoroughly-purified condition.From the above description it will be clear that the gas ascending willbe more and more purified until close to the top it is almost pure andwill meet at this point practically pure cleansing liquid, so that thelast traces of impurities will be removed from it. The purifying liquidflows out of the bottom section at e.

In the modification shown in Fig. 3 the jets (Z are omitted, an openconical ring f having its largest diameter at the top being employed andthe gas passing through the same in the direction of the arrows. Theoperation of this modification is otherwise the same as that illustratedin Figs. 1 and 2, with the exception that in the present case the gas isretained or retarded in each section by means of a flanged ring y, whichmay be mounted at the lower side of each cover-plate .2 near theperiphery of the same.

I claim as my invention- 1. In a gas-washer, the combination of aseriesof superposed chambers, having each a central opening in the bottom withupwardlyextending flange around-it, said opening serving for the upwardpassage of the gas and the downward passage of the liquid, a cover toeach compartment, downwardly inclined from the center to the edges andhaving a series of peripheral openings for the downward passage of theliquid and the upward passage of the gas, a shaft extending through allthe central openings and having thereon a fan-wheel in each compartment,thelower edge of which extends into the liquid on the bottom of the saidcompartment, said fan-wheels having a series of peripheral openings forthe throughlet of the gas, gas inlet at the bottom and outlet at the topand liquid inlet at the top and outlet at the bottom of the Washer andmeans for rotating the said shaft substantially as described.

2. In a gas-washer, the combination of a series of superposed chambers,having each a central opening in the bottom, the said bottom beingupwardly inclined from the center toward the edge, a vertical flangearound said central opening, a cover to each compartment beingdownwardly inclined from the center to the edges and having peripheralopenings at the edges, a shaft extending through the central openingsand having fan wheels thereon, downwardly-extending annular flanges tosaid fan-wheels to extend into the liquid on the bottom of the chamber,peripheral openings in said fan-wheels for the throughlet of the gas,gas inlet at the bottom and outlet at the top and liquid inlet at thetop and outlet at the bottom of the apparatus and means for rotating thesaid shaft and fan-wheels substantially as described.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

HEINRICH GERDES.

Witnesses: I

HENRY HASPER,

W OLDEMAR HAUPT.

